FAQ
Why can't I receive SMS messages on my Iridium handset?
Check to ensure that the folder capacity (outgoing, incoming and draft) has not exceeded 30 messages. Also, that your phone is registered. To test registration on the phone, Iridium has created a test number; 001-480-752-5105. There are no charges for performing this test. Additional information on SMS messaging service can be found in the user manual, section 7, titled "Using the messages menu".